Title:
METHOD FOR MANUFACTURING ELECTRIC WIRE
Document Type and Number:
WIPO Patent Application WO/2010/137700
Kind Code:
A1
Abstract:
Disclosed is a method for manufacturing an electric wire, which can economically manufacture the wire having an air gap formed stably for an insulator covering a conductor and exhibiting good transmission efficiency.
The circumference of a central conductor (12) that is drawn out from an insertion hole (44) formed in the center of a point (41) is covered with an insulator (13) consisting of resin (R) by extruding the resin (R) to annular extrusion channels (51, 52) consisting of the gap between a die (31) having a truncated conical inner circumferential surface (32) and the point (41) having a truncated conical outer circumferential surface (42) thus manufacturing an electric wire (11). Three or more tubular bodies (45) extending through the extrusion channels (51, 52) along the extrusion direction are provided on the outer circumferential surface (42) of the point (41) at equally-spaced intervals in the circumferential direction, and the resin (R) is extruded to the extrusion channels (51, 52) thus forming a plurality of air gaps (14) in the resin (R) continuously in the longitudinal direction, at intervals in the circumferential direction, by the air flowing from the tubular bodies (45).
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Inventors:
HAYASHISHITA Tatsunori (Inc. 4-98, 4-chome, Kitainter Kogyodanchi, Hachinohe-sh, Aomori 45, 〒0392245, JP)
林下 達則 (〒45 青森県八戸市北インター工業団地四丁目４番９８号 住友電工電子ワイヤー株式会社内 Aomori, 〒0392245, JP)
TAKAHASHI Hirokazu (Inc. 3-3, Satsuki-cho, Kanuma-sh, Tochigi 85, 〒3228585, JP)
林下 達則 (〒45 青森県八戸市北インター工業団地四丁目４番９８号 住友電工電子ワイヤー株式会社内 Aomori, 〒0392245, JP)
TAKAHASHI Hirokazu (Inc. 3-3, Satsuki-cho, Kanuma-sh, Tochigi 85, 〒3228585, JP)
Application Number:
JP2010/059130
Publication Date:
December 02, 2010
Filing Date:
May 28, 2010
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES, LTD. (5-33, Kitahama 4-chome Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
住友電気工業株式会社 (〒41 大阪府大阪市中央区北浜四丁目５番３３号 Osaka, 〒5410041, JP)
HAYASHISHITA Tatsunori (Inc. 4-98, 4-chome, Kitainter Kogyodanchi, Hachinohe-sh, Aomori 45, 〒0392245, JP)
林下 達則 (〒45 青森県八戸市北インター工業団地四丁目４番９８号 住友電工電子ワイヤー株式会社内 Aomori, 〒0392245, JP)
住友電気工業株式会社 (〒41 大阪府大阪市中央区北浜四丁目５番３３号 Osaka, 〒5410041, JP)
HAYASHISHITA Tatsunori (Inc. 4-98, 4-chome, Kitainter Kogyodanchi, Hachinohe-sh, Aomori 45, 〒0392245, JP)
林下 達則 (〒45 青森県八戸市北インター工業団地四丁目４番９８号 住友電工電子ワイヤー株式会社内 Aomori, 〒0392245, JP)
International Classes:
H01B13/14; H01B13/016; H01B13/24
Attorney, Agent or Firm:
NAITO Teruo (Shin-Ei Patent Firm, Toranomon East Bldg. 8F 7-13, Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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